Answer: It would not be a good idea to swim keeping in mind that I have never swum this far and that I am somewhat tired.
Explanation: A person who knows that he has not swum that far and is tired at the same time would not be a good idea to try to swim. Many people have drowned trying to swim at distances they have not done before and it is dangerous to do so if, above that, it feels tired.
You didn't provide a graph? Generally, when we're talking about homeostatis, we're talking about the neutral state of the body during which it can function optimally. If you've provided a graph which involves the human body under an intense workload, then we can be sure that during this period the body isn't under homeostasis.
The other person could be peer pressuring you and an internal factor could be a chemical in your brain
